12189964709 has 8 divisors (see below), whose sum is σ = 13128681720. Its totient is φ = 11251394496.

The previous prime is 12189964673. The next prime is 12189964763. The reversal of 12189964709 is 90746998121.

It can be written as a sum of positive squares in 4 ways, for example, as 12180100 + 12177784609 = 3490^2 + 110353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12189964709 - 2¹⁶ = 12189899173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189967709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185747 + ... + 242655.

It is an arithmetic number, because the mean of its divisors is an integer number (1641085215).

Almost surely, 2^12189964709 is an apocalyptic number.

It is an amenable number.

12189964709 is a deficient number, since it is larger than the sum of its proper divisors (938717011).

12189964709 is a wasteful number, since it uses less digits than its factorization.

12189964709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73399.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 12189964709 in words is "twelve billion, one hundred eighty-nine million, nine hundred sixty-four thousand, seven hundred nine".